Thermal Energy Quiz

What is conduction of thermal energy?

• Transfer of heat through direct contact between particles of a substance

• Transfer of heat through sound waves

• Transfer of heat through the movement of fluid particles

• Transfer of heat through electromagnetic waves

Give an example of conduction of thermal energy.

• Touching a metal spoon that has been placed in hot soup

• Putting ice in a glass of water

• Turning on a light switch

• Blowing on a hot drink to cool it down

What is convection of thermal energy?

• Transfer of heat through the movement of solids

• Transfer of heat through electromagnetic waves

• Transfer of heat through the movement of fluids

• Transfer of heat through the movement of gases

Explain how convection of thermal energy occurs.

• Thermal energy is transferred through electromagnetic waves

• Convection of thermal energy occurs through the movement of solid particles

• Heated particles move from one place to another, carrying thermal energy with them.

• Thermal energy is carried by sound waves

What is radiation of thermal energy?

• Transfer of heat through conduction

• Transfer of heat through convection

• Transfer of heat through mechanical waves

• Transfer of heat through electromagnetic waves

How does radiation of thermal energy differ from conduction and convection?

• Radiation requires physical contact to transfer heat.

• Radiation only occurs in liquids.

• Radiation does not require a medium to transfer heat.

• Radiation is slower than conduction and convection.

What is heat transfer?

• Heat transfer is the movement of electrical energy from one object to another.

• Heat transfer is the conversion of mechanical energy into thermal energy.

• Heat transfer is the process of converting light energy into heat energy.

• Heat transfer is the movement of thermal energy from one thing to another thing of different temperature.

Explain the concept of heat transfer with an example.

• When a hot cup of coffee is placed on a table, the heat from the coffee is transferred to the table through conduction.

• When a hot cup of coffee is placed on a table, the heat from the coffee is transferred to the table through convection.

• When a hot cup of coffee is placed on a table, the heat from the coffee is transferred to the table through insulation.

• When a hot cup of coffee is placed on a table, the heat from the coffee is transferred to the table through radiation.

What is thermal equilibrium?

• The state in which two or more objects or substances in contact with each other have the same temperature.

• The state in which two objects have different temperatures

• The state in which objects are not in contact with each other

• The state in which objects have varying temperatures

How is thermal equilibrium achieved in a system?

• By introducing a cooling agent to one part of the system

• By reducing the pressure within the system

• By reaching a uniform temperature throughout the system.

• By increasing the temperature at one end of the system